Apparatus for filling bottles or jugs with aerated liquids.



PATENTED OCT. 6, 1903.

No. 740,931.v v

SGHR0.illl'l.t A K APPARATUS- POR. FEELING;- BTITLEZS @E UGS WITHAERATED LIQUIDS.

ABEBIQA'EEQN FILED Ueli 2, 1902.

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PATBNTED 00T. e, 19os.

. A. SCHROEDTER. APPARATUS FOR FILLING BOTTLES 0R JUGS WITH AERATEDLIQUIDS.

APPLICATION FILED AIIG. 2. 1902.

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PATENTEB OCT. 6, i903,

l AQSGHROEDTBR. APPARATUS FOR FILLING BOTTLES-0R JUGS WITH ABRATEDLIQUIDS.

APPLICATION FILED AUG. 2, 1902.

No MODEL.

NVELN'V'QR ATTQRNEYS.

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vtakes 4place under the counter-pressure of the UNITED STATES PatentedOctober 6, 1903.

PATENT OFFICE APPARATUS FOR FILLlNG BOTTLES OR JUGS WlTH AERATEDLlQUIDS.

SPECIFICATION forming part of Letters Patent No. 740,931, dated October6, 1903.

Application led August 2, 1902,

To all whom, it wea/ y concern:

Be it known that I, AUGUsT SoHRoED'rEn, a subject of the GermanEmperor,and a resident of Charlottenburg, near Berlin, in the Empire ofGermany, have invented a certain new and useful Improved Apparatus forFilling Botiles or Jugs with Aerated Liquids, of which the following isan exact, full, and clear description.

This invention relates to such apparatus for Iilling bottles or jugswith liquids impregnated with carbonio acid, especially beer, in whichcompressed air is used as counter-pressure medium for preventing theformation of froth. The improvement consists in the arrangement of acompressed-air cylinder whose pipe leading to the bottle is providedwith an exhaust-opening and is so constructed that the bottle to befilled with beer may be brought alternately in communication with thecompressed-air cylinder or with the open air.

When filling the bottle with beer, the free space of the bottlecommunicates with the compressed-air cylinder, so that the fillingcompressed air. When the bottle is filled, the communication with thecompressed-air cylinder is interrupted by a suitable mechanism and thepart of the compressed-air pipe located between the bottle and theexhaust-opening is brought into communication with the external air, sothat the com-v pressed air contained in the said part of the pipe isexhausted into the open air. The apparatus affords the advantage thatbetere' the commencement of the bottling the quantity of compressed airof the necessary pressure required for one filling need only be producedonce and that after each filling only so much of this compressed air isexhausted as Vthat supplied each time, according to the usual contentsof air'in the bottle to be illed.

The accompanying drawings show the improved apparatus iu twoV verticalsections.

Figure 1 is a section through the middle of the apparatus and thecompressed-air cylinder. Fig. 2 is also a vertical section through themiddle of the apparatus. Figs. 3, 4, and 5 are detail views.

On the table l are secured the four vertical rods 2, which are heldtogether above bythe rtains the float'l, with upper washer 18.

Serial No. 118.171. (No model.)

the stops 10. The movable lling-pipe 12 is Y secured to the slide 6 bymeans of screws 11. The lower part of the filling-pipe 12 extendsloosely through a middle bore with packingsleeve of the slide 5, and theupper part of the said pipe extends loosely through a middle bore withpacking-sleeve of the frame 3. The filling-pipe 12 and slide 6',respectively, are raised and lowered by means of rods 13, operated by atreadle (not shown) provided below the table or in any other suitablemanner. The middle bore of the slide 5 is somewhat widened below,where'it is surrounded by the packing-ring 14 and communicates through apassage 15 with the receiver 16, pro vided above the slide. Thisreceiver 16 con- The liquid ows from tbe barrel into the bottle 19 whenthe filling-pipe 12 is lowered -and from above through the pipe 20,annular passage 2l, and filling-pipe openings 22. The receiver-15communicates through the pipes 23, 24, 25, 26, and 27 with the cylinder28 for the compressed air. The pipes 25 and 26 slide one within theother and are made airtight. The pipe 211I is provided with theexhaustopening 29, and the two small pistons 3l and 32 are arranged onone common rod 30. The pistonrod 30 is provided with the two stops 33and 34 for the slide 6 and the pin 35, movably attached to the latter.

The pistons 31 and 32 are so arranged on the rod 30 that when the latteris in an elevated position the piston 32 enters the mouth 36 and thepiston 3l extends beyond the exhaust-opening 29. The compressed-aircylinder 28 is arranged air-tight on a xed hollow piston 37, withpacking-flange 38, and provided in its closedupper part with a valve 40,actuated-bya spring 39 and opening down- IOO ward. A stop 41 isadjustably provided on the frame 3 above lthe valve 10. The cylinder 28can be weighted by interchangeable weights 42, and it is so weightedbefore the vbottling process that the air caught therein is subject to asomewhat less pressure than that at which the liquid is forced out ofthe barrel through the filling-pipe into the bottle.

The operation is as follows: The tapster depresses the treadle, (notshown',) thereby lifting the slides 5 and 6 with the filling-pipe 12 andthe packing 14, puts in a bottle 19, and again releases the treadle,whereupon the raised parts descend again through gravity and take up theposition as shown in the drawings. While the cock of the barrel isclosed, the tapster irstintroduces in the bottle in a suitable waycompressed air of the required pressure. This can be done by lifting anddepressing the cylinder 28 a few times, while air enters thepacking-flange 38, but does not pass out of same. Consequently the airis condensed in the bottle 19, because in the position shown thecommunicating pipes 15, 16, 23, 24, 36, 25, 26, 27, and 37 are open.Above the cylinder 28 a manoineter can be provided, which indicates therequired pressure. The air can also be condensed by a special air-pump,for the connection of which the cylinder 28 or any suitable part of thesaid communicating pipe would have to be provided with sockets and backpressure valve. This production of compressed air, which need only beeffected once-7l. e., only for thefi rst bottle-does not present anydifficulty. The tapster now opens the cock,which remains constantlyopen. NVhen the cock is open, the liquid flows through the pipe 20,annular passage or channel 21, filling-pipe openings 22, andfilling-pipe 12 into the bottle 19, displaces the compressed air andforces the same through the passage 15, receiver 16, communicating pipes23 to 27, and hollow piston 37 into the cylinder 28, which ascends. Therunning ot' liquid lasts as long as fiask 19, canall, and receiver 16are filled with beer. At this moment iioat 17 being in the receiver ishighly pressed and with its upper washer 18 closes the upper opening ofthe receiver 16, so that now no more beer can Iiow. When the bottle 19is filled with beer, the tapster again depresses the treadle. Thefilling-pipe l2 passes out of the bottle 19, whereby at the same timethe beer still in canal 15 and receiver 16 flows into iask 19 and fillsup the space which was taken before by the filling-pipe 12, so that theflask is filled with beer to the brim. The slide 6 now engages with thestop 33 of the piston-rod 30, raises the latter with pistons 31 and 32,closes the mouth 36, leadingvto the compressed-air cylinder 28, anduncovers the exhaust-opening 29. Consequentlythatpartofthecompressed airwhich is located between the piston 32 and the packing-14 in thecommunicating pipe escapes through the said exhaust-opening, while themajor part of the compressed air remains between the piston 32 and thecylinder 28. In its further high course traverse 6 strikes against thehollows 10 of the support-rods of the other traverse 5, by which thefilling 14 is arranged for vessel 19, and thereby lifts traverse 5, withthe filling 14, from the vessel. The tapster now removes the lledbottle, puts in an empty one, and releases the treadle. Hereby traverse6 moves downward and sets free first the hollows 10 of the support-rods9 of the second traverse 5, so that traverse 5 likewise falls down andis set with its filling 14 upon flask 19. At the same time thefilling-pipe 12, which with traverse 6 moves downward, enters into ask19. At the backward motion of traverse 6 bolt 35, embedded so as torevolve downward with the layer, strongly connected with traverse 6, andon this account exercises no action at the upward motion of traverse 6,strikes against hollow 34 of piston-rod 30, and presses down pistons 31and 32, while the exhaust-opening 29 is shut off, the pipe-mouth 36uncovered, and the previonsly-arrested compressed air is thereforeforced by the heavy descending cylinder 28 through the saidcommunicating pipe into the bottle 19. When pistons 31 and 32 are so farpressed down that piston 32 reaches its deepest position, then bolt 35,which, as previously stated, also shifts and is under the influence of aspiral spring, (not shown,) is pressed back, so as to glide from hollow34 and further go down with traverse 6. Collar or stock 34 is movably oradjustably arranged on the piston-rod 30 in order to stop it higher orlower, according to the height of the vessels to be filled. Stop 33 isfirmly arranged to the end of rod 30. l/Vhen traverse 6 is so farlowered that the fillingpipe 12 reaches its deepest position, then itsfilling-openings 22 stop exactly on the circular canal 2l and thebeer-guide 20, connected therewith. It should be remarked that theopening and closing of the liquid-guide is operated automaticallywithout special cock. This is effected by arranging in the upper part ofthe filling-pipe 12 a small piston 44, Fig. 3, which is weighted by aweight 45, fixed to its piston-rod. Weight 45 on its lower side isprovided with four holes 46, Fig. 4, in which can be inserted pivots 4S,Fig. 5, provided accordingly on the rotatory slide 47. The rotatoryslide 47 is usually so inserted that at low position of fillingpipe 12the weight 45 rests on pin 48. Piston 44 is liftedup and sets free theinlet-openings 22, and thereby the liow of beer from guide 2O and thecircular canal 21. In case for any reason the flow is suddenlyinterrupted the rotatory slide 47 is turned so far'as it stops with itspivots 48 upon the holes 46 of weight 45, whereupon-the latter sinks andcloses the supply-openings 22 of filling-pipe 12 by means of thelikewise sinking piston 44. When filling-pipe 12 moves up toward thefilling of the flask, then openings 22 are also closed by piston 44, andthus is avoided a flow of beer from filling-pipe 12. When filling-pipe12 is found in its lowest position, then weight 45 rests upon pivot 48of rotatory TOO IIO

normal position.

slide 47' and the beer flows into the fillingpipe, reaches into theflask, and forces the air contained therein back again intothe cylinder28, and during the second filling the cylinder 28 Will ascend higherthan during the first filling, because besides the compressed air in thebottle that air will also be displaced which was contained in the emptybottle at the outset. Hence the cylinder would rise higher with eachadditional filling, because there is a continuous supply ofcommon air.In order to prevent this and make the cylinder as small as possible, theexhaust-valve 40 and stop 41 are provided. During the second and eachsubsequent filling the valve 40 bears against the stop 4:1. The valve istherefore opened for a moment, exhausts surplus air, and immediatelycloses again under the action of its spring 39, because the cylinder 28at once descends below the stop 41 into its In this position thecylinder counterbalances the pressure due to the quantity of compressedair required for special-sized vessels. For smaller or larger vesselsthe stop 4l is placed higher or lower for the purpose of regulating thequantity of compressed air required for the time being. The diderencesabove or below the normal capacity in connection with vessels of thesame height are sometimes very considerable and can be adjustedautomatically by more or less air being exhausted through the valve 40.Since after each lling so much air is exhausted through the valve 40 andthe opening 29 as there is common or atmospheric air contained in thebottle when adjusting the same, the latter, however, being alsocompressed by the weighted cylinder 28, the original air-pressureremains constant, and consequently the vessel can be tilled underconstant counterpressure without any VJfroth being produced. If theoriginal quantity of compressed air cannot be produced in any othermanner, only the iirst bottle need be` illed4 without counter-pressure.The air forced out of the bottle into the cylinder 28 is condensed bythe latter, and thus forms counterpressure for the second bottle. Thiscounterpressure increases with the third bottle, owing to the freshsupply of air. The required height of pressure may now already beexceeded and surplus air exhausted.

Generally speaking, the above-described apparatus does not require anyspecial means for being set in operation. Only the first two bottles orperhaps also the third one will contain more or less froth over theliquid; but as soon as the normal state of counter-pressure is attainedafter the third or fourth bottle each filling takes place without anyfroth being produced, and after each lling se much compressed air isexhausted as there is uncondensed air contained in the bottle.

Having now particularly described and ascertained the naturev of thesaid invention, I declare that what I claim, and wish to secure byLetters Patent, is-

1. In an apparatus for filling bottles or jugs with aerated liquids, thecombination with a liing-pipe connected with a source of liquidsupplyand means for automatically opening and closing said filling-pipe, of acounterpressure device, comprising a Weighted movable pump-cylinder witha fixed hollow piston, means for connecting the interior of thepump-cylinder with the interior or" the bottle to be filled, avertically-reciprocatory iillinghead, through which said iilling-pipereciprocates, means for connecting the interior of the bottlealternately with the pressure device or with the open air and means forreciprocating said iilling-pipe and filling-head, substantially as setforth.

2. In an apparatus forlling bottles or jugs with aerated liquids, thecombination with a filling-pipe connected with a source of liquidsupplyand means for automatically opening and closing said lling-pipe, of acounterpressure device, comprising a weighted movable pump-cylinder witha fixed hollow piston and an air-discharge valve, means forautomatically opening said discharge-valve, means for connecting theinterior of the pumpcylinder with the interior of the bottle to beiilled, a vertically-reciprocatory filling-head through which saidiilling-pipe reciprocates, means for connecting the interior of thebottle alternately with the pressure device or with the open air andmeans for reciprocating said filling-pipe andl filling-head,substantially as set forth. l

` In witness whereof I have hereunto set my` hand in presence of twowitnesses.

. AUGUST SCHROEDTER.

lVitnesses;

WOLDEMAR HAUPT, HENRY HASPER.,

